Regarding Brentwood and the records of their opponents--- Brentwood actually played five ranked teams (current rankings). It just happened that four of them were out of state teams. They were Grissom (AL), ranked #1 in 6A with a record of 26-2-1; Oak Mountain-(AL), ranked #3 in 6A with a record of 19-7-2; Habersham Central- (GA), ranked #15 in 4A with a record of 16-2-1 and Putnam City North-(OK), ranked #8 in 6A with a record of 10-4. At the time Brentwood beat them, Grissom, Habersham and Putnam City were all unbeaten.
Throwing out the record of "TBA" on their schedule the revised won-loss-tie records of Brentwood's opponents would be 145-72-27 or 145-72 with ties eliminated for a percentage of appx. 67%.
Regardless of these numbers the only game that matters for Brentwood is the next one against a hot Franklin team in the District 11 AAA semifinals.
Before state becomes a topic Brentwood must get through some very tough teams. In the big picture, percentages don't win games for anyone.